iHeartRadio Fest 2013 LIVE: Justin Timberlake, Drake, Miley Cyrus & More Performances

Saturday performance highlights of the 2013 iHeartRadio Music Festival include Justin Timberlake, Miley Cyrus, Drake, Paul McCartney, Bruno Mars, Miguel, Tim McGraw, Ke$ha, Maroon 5 and more (Sept. 21, 2013)